概述
常用活动抽奖功能，九宫格抽奖，两种方式切换，图片模式和文字模式，带抽奖次数。功能没啥问题，除了有点丑，css样式自己美化一下就可以了...
详细
微信小程序大转盘抽奖
演示图文字：
演示图 图片：
部分代码：
//获取应用实例var app = getApp()Page({data: {circleList: [],//圆点数组awardList: [],//奖品数组colorCircleFirst: '#FFDF2F',//圆点颜色1colorCircleSecond: '#FE4D32',//圆点颜色2colorAwardDefault: '#F5F0FC',//奖品默认颜色colorAwardSelect: '#000000',//奖品选中颜色indexSelect: 0,//被选中的奖品indexisRunning: false,//是否正在抽奖lawNum:10,imageAward: ['../../images/1.jpg','../../images/2.jpg','../../images/3.jpg','../../images/4.jpg','../../images/5.jpg','../../images/6.jpg','../../images/7.jpg','../../images/8.jpg',],//奖品图片数组textAward: ['10元','5元','1元','0.5元','40元','30元','90元','0.1元',],//奖品图片数组isImage:true,}, onLoad: function () {var _this = this; //圆点设置var leftCircle = 7.5;var topCircle = 7.5;var circleList = [];for (var i = 0; i < 24; i++) {if (i == 0) {topCircle = 15;leftCircle = 15;} else if (i < 6) {topCircle = 7.5;leftCircle = leftCircle + 102.5;} else if (i == 6) {topCircle = 15leftCircle = 620;} else if (i < 12) {topCircle = topCircle + 94;leftCircle = 620;} else if (i == 12) {topCircle = 565;leftCircle = 620;} else if (i < 18) {topCircle = 570;leftCircle = leftCircle - 102.5;} else if (i == 18) {topCircle = 565;leftCircle = 15;} else if (i < 24) {topCircle = topCircle - 94;leftCircle = 7.5;} else {return}circleList.push({ topCircle: topCircle, leftCircle: leftCircle });}this.setData({circleList: circleList}) //圆点闪烁setInterval(function () {if (_this.data.colorCircleFirst == '#FFDF2F') {_this.setData({colorCircleFirst: '#FE4D32',colorCircleSecond: '#FFDF2F',})} else {_this.setData({colorCircleFirst: '#FFDF2F',colorCircleSecond: '#FE4D32',})}}, 500) //奖品item设置var awardList = []; //间距,怎么顺眼怎么设置吧.var topAward = 25;var leftAward = 25;for (var j = 0; j < 8; j++) {if (j == 0) {topAward = 25;leftAward = 25;} else if (j < 3) {topAward = topAward; //166.6666是宽.15是间距.下同leftAward = leftAward + 166.6666 + 15;} else if (j < 5) {leftAward = leftAward; //150是高,15是间距,下同topAward = topAward + 150 + 15;} else if (j < 7) {leftAward = leftAward - 166.6666 - 15;topAward = topAward;} else if (j < 8) {leftAward = leftAward;topAward = topAward - 150 - 15;}var imageAward;if(this.data.isImage){imageAward = this.data.imageAward[j];}else{imageAward = this.data.textAward[j];}awardList.push({ topAward: topAward, leftAward: leftAward, imageAward: imageAward });}this.setData({awardList: awardList})}, //开始游戏startGame: function () {if (this.data.isRunning) returnif(this.data.lawNum<=0){wx.showModal({content: '没有更多次数了',showCancel: false,//去掉取消按钮success: function (res) {if (res.confirm) {_this.setData({isRunning: false})}}})return}let num = this.data.lawNumthis.setData({isRunning: true,lawNum:num})var _this = this;var indexSelect = 0var i = 0;var timer = setInterval(function () {indexSelect++; //这里我只是简单粗暴用y=30*x+200函数做的处理.可根据自己的需求改变转盘速度i += 30;if (i > 1000) { //去除循环clearInterval(timer) //获奖提示 wx.showModal({title: '恭喜您',content: '获得了第' + (_this.data.indexSelect + 1) + "个优惠券",showCancel: false,//去掉取消按钮success: function (res) {if (res.confirm) {_this.setData({isRunning: false})}}})}indexSelect = indexSelect % 8;_this.setData({indexSelect: indexSelect})}, (200 + i))}})项目结构图：
来源地址：https://blog.csdn.net/hanjiepo/article/details/133026130
